It follows from the foregoing that all digitized data or information processed and stored by the computer definitely constitute evidence. It, therefore, goes without saying that as existing technology matures, and new technologies emerge, litigators would be faced with an ever-expanding list of media as potential sources on which relevant electronic evidence may reside. Chapter 4 explores the various sources of digital evidence with specific reference to their evidentiary value. Such sources include but not limited to mobile phones, digital cameras and photocopiers. Others are hard drives, memory cards, flash drives, satellite navigation devices, keyloggers, wearables, the Cloud, etc.